universite-gustave-eiffel / i-simpa Goto Github PK

I compiled I-Simpa on fedora 21 with no major hassle. I had to:

1. Manually install boost_1_60_0 and wxWidgets-3.1.0
2. Change the minimum cmake verion in CMakeLists.txt to 3.0.0
3. Make sure to cmake with python2.7: "cmake -DPYTHON_INCLUDE_DIR=/usr/include/python2.7/ -DPYTHON_LIBRARY=/usr/lib64/libpython2.7.so"

I uploaded 3ds files and did some meshing... everything seems to be working so far.

attached is ldd output for isimpa
dependency.txt

When the windows "Properties" is not docked, the title of the windows is not refreshed when changing the tree element.

It could be interesting to create groups of User Spectrum, as it is done for the User Materials.

The Python script toolboxes that are in the UserScript folder should be in the SystemScript, since they are 'default' scripts for I-Simpa. They are useful for I-Simpa. UserScript folder should be keep only for toolbox scripts written by users.

By default, display all elements of the tree for each calculation code in the 'Calculation tab'

We imported a model, remeshed it, and set up sources/receivers, then ran calculation SPPS. We followed the guidelines provided in the French I-Simpa Handbook under Tutorials. The console reads as follows:

2:08:26 PM: Loading mesh ASCII file...
2:08:26 PM: Loading ASCII files from mesh generator complete
2:08:26 PM: Total time of meshing: 1324 ms
2:08:26 PM: External code execution
2:08:26 PM: C:\Program Files (x86)\I-SIMPA\core\sppsNantes\sppsNantes.exe "C:\Users\brennmat\AppData\Roaming\I-SIMPA\current\instance1\report\SPPS\2016-02-19_14h08m25s\config.xml"
2:08:26 PM: sppsNantes.exe :Spps 2.1.2 version 7 juin 2011
2:08:26 PM: sppsNantes.exe :XML configuration file is currently loading ..
2:08:26 PM: sppsNantes.exe :Loading of the atmospheric condition..
2:08:26 PM: sppsNantes.exe :Loading of the simulation configuration..
2:08:26 PM: sppsNantes.exe :Loading of the emitter list..
2:08:26 PM: sppsNantes.exe :1 emitters has been loaded.
2:08:26 PM: sppsNantes.exe :Loading of the materials..
2:08:26 PM: sppsNantes.exe :2 materials has been loaded.
2:08:26 PM: sppsNantes.exe :Loading of the punctual receivers
2:08:26 PM: sppsNantes.exe :Loading of the surfaces receivers
2:08:26 PM: sppsNantes.exe :Loading of the obstructions
2:08:26 PM: sppsNantes.exe :XML configuration file has been loaded.
2:08:26 PM: sppsNantes.exe :Scene mesh is currently loading ..
2:08:26 PM: sppsNantes.exe :Opening C:\Users\brennmat\AppData\Roaming\I-SIMPA\current\instance1\report\SPPS\2016-02-19_14h08m25s\mesh.cbin
2:08:26 PM: sppsNantes.exe :Load of the scene mesh file has been completed successfully.
2:08:27 PM: sppsNantes.exe :C:\Users\brennmat\AppData\Roaming\I-SIMPA\current\instance1\report\SPPS\2016-02-19_14h08m25s\tetramesh.mbin
2:08:27 PM: sppsNantes.exe :Tetrahedalization file is empty, the calculation can't be done !
2:08:27 PM: sppsNantes.exe :Unable to read the tetrahedalization of the scene mesh file, calculation canceled.
2:08:27 PM: Caluation time: 674 ms
2:08:27 PM: Copy of calculation parameters
2:08:27 PM: Refreshing onglet 'Report'
2:08:27 PM: Error:Failed to load icon from the file '"%1"' (error 2: the system cannot find the file specified.)
2:08:27 PM: Error:Failed to load icon from the file '"%1"' (error 2: the system cannot find the file specified.)
2:08:27 PM: Total time calculation: 2555 ms

*Note the error:Unable to read the tetrahedalization of the scene mesh file, calculation canceled.--- we are unable to find the "ressource" (resource) file under the SPPS calculation report in order to generate a visualization of our data. *

Any ideas?

Today exposed class and methods names to python do not follow the standards rules¹

However, changing names should break existing python user scripts.

ex:

import libsimpa as ls

model=ls.ioModel()
ls.CformatBIN().ExportBIN(filepath,model)

become

import libsimpa as ls

model=ls.IoModel()
ls.FormatBIN().export_bin(filepath,model)

The question is, do we postpone such changes for next major version of I-SIMPA or we will change it on the next release ?

Hello, I've been having issues with I-Simpa, particularly with tetgen.exe and sppsNantes.exe.

I have a .3ds file made in sketchup (I've tried also 3D studio and the same issue applies) and most of the time, if I import the scene with the repair model and try to run the SPPS calculation, either of these apps will crash (usually tetgen.exe), and if i import them with the average model remesh, the spps calculation will only get done if the design is simple, if the design is slightly complex, it will crash.

Also, if the imported scene is slightly complex, the average model remesh will not work properly, it will get some parts of the scene missing.

-Which software offers the best compatibility with I-Simpa? and which format?
-Will I-Simpa be more compatible with windows XP/Vista/7(32bits)?
-Are there any tips regarding the design of the scene? (lines across squared surfaces to create corners, always begin the design in xyz=0, etc.)

thanks 👯

Hello

I created a project based on instructions in https://github.com/Ifsttar/I-Simpa/wiki/Study-of-teaching-room

I simply added a sound source and a receiver and started performing calculations. However, it ends abruptly with the following result - Error:Failed to load icon from the file '"%1"' (error 2: the system cannot find the file specified.)

Could you please help me fix the issue. I am using Windows 8

Thanks,
Mahanth

When the "Energetic" method is chosen, this value allows to define a ratio 10^n ("n" being the given value of the parameter), for which the particle is removed from the domain : i.e. when the initial energy of the particle is decreased of 10^n (i.e 10xn dB), then the particle is removed).

Proposal N°1
This limit is currently limited to n=10 (i.e. a decrease of 100dB): this limit value should be increased

Proposal N°2
A new calculation parameter could be added in order to enable/disable this option (i.e. keeping all particles without considering their energy), even when the "Energetic" method is enable

Hi,
how can I estimate the receiver radius?
Thanks!

• It is not possible to change the directivity file when a first directivity file was already selected.
  The directivity element must be deleted to change the directivity file. It could be interesting to allow to change the directivity file without deleting the directivity element.
• Add a 'Description' text box in the 'Properties' of a directivity

The Copy/Paste of a directivity is not functional

Hi, can I obtain the pressure value on receiver point from SPL (in I-Simpa and SPPS)?
Thank you very much.

Is-it necessary to display a check box for 'Calculate the mean free path'.
Can it be calculated automatically and display in the 'Mean free path' ceil?
In addition, if not calculated or not defined, the value of the mean free path should not defined/display (i.e. display 'not defined')

If two sources are linked with the same directivity file, do not reload the directivity file but link with the loaded structure.

I am currently working on my bachelor thesis, on AGH University in Poland, in which I am comparing I-SIMPA with CATT-Acoustics.

I've noticed strange issue. The result of simulation is extremely dependant on scattering. With no scattering the results are quite similar to ones from CATT, but when I set proper scattering values, then RT increases 2 up to 3 times. I know that adding scattering changes RT, but I think, the difference is much to big. Especially taking into account, that the same changes done in CATT produce more or less good results in both cases. Have you encountered such behaviour? I attach an image of measured and predicted T20 with different scattering settings.

I am looking forward to receiving your reply.

People have observed discontinuities of results between horizontal and vertical receivers planes, for reverberation times and sound levels. See example below:

I am implementing new calculation codes based on SPPS.
Because all codes share some tools I think it may be good to move folders with tools, data manager and input output for SPPS to some folder in main src directory, so they are not bounded to certain calculation code, but generally available. Then to make changes it would just require making a derived class with changes only.

I know it can be done without moving folders, but I think it will make the solution clearer.

On the first start of ISIMPA copy appconfig.xml to user folder.

Add the ability to add or remove material and spectrum to this static database.( shared across projects)

Some table produce data with many numbers after the comma (like TR and SPL). It could be useful to limit this to a relevant number depdning of the parameter that is calculated (2 for TR and SPL for example)

In SPPS there is 2 explanations for such issue:
1 - By default surface receivers values are intensity maps that does take account of particle direction
2 - Punctual receivers are modelised by a sphere, surface receivers are modelised by a surface. Surface receivers statistically receive less particle.

Switch from intensity to SPL surface receivers in the SPPS parameters.

I've compiled the new version of I-SIMPA and I've noticed that new directivity options doesn't show for old projects.

It would be great to consider specific source directivity (in addition of current reflection law) in I-Simpa.

In order to use surface receivers for advanced study, user should have the ability to convert surface receivers using well known format like vtk files.

Could use python library pyvtk to easily do this:

http://www.vtk.org/Wiki/VTK/Examples/Python

Dear all,

I am trying to build i-simpa on my mac using make but no xml file is found?

my command:

mkdir build
cd build
cmake ..
make
make install

output:

`
[100%] Built target spps
Install the project...
-- Install configuration: ""
-- Installing: /.../I-Simpa/build/libsimpa/_libsimpa.so
-- Installing: /.../I-Simpa/build/bin/spps

Then, i run i-simpa:

cd bin/
./spps

output:

Spps 2.1.4 version december 13 2013
The path of the XML configuration file must be specified!

could you help me?
Where is the XML configuration file?

I-SIMPA contact form here http://i-simpa.ifsttar.fr/about/colonne-1/contact/?police=0 is not working. Should fix it or remove it.

I've been messing around with I-Simpa again, but, this time, I'm getting odd results when adding absorption to a surface, basically what I've done is to add absorption to the ceiling of a room, and the RT should be reduced, but, the results I'm getting from the SPPS calculation are not what I expected them to be. The results are the same when using the un-modified version of I-Simpa and the diffusion corrected I-Simpa. Maybe I'm doing something wrong... The results are the following:

The graphs that say "original" are the ones of the room with the original surfaces of the room (plasterboard and concrete) and the ones that say blackacoustic is the material that I'm using for the absorption on the ceiling.

I don't get why I'm getting a small difference with absorption when the calculation is done with SPPS.

The results are very similar when using:

*energetic or random calculation methods.
*modified or unmodified I-Simpa.
*with 150,000 or 5000000 sound particles.

I know I'm missing something... just don't know what

thanks

I-Simpa was first developped in french, then we decided to change into English all the source code. I found out that some work had to be done on the xml config file on the creation and the loading. In fact all tag's name is in French. So in order to change in English the widget's option you have to change first the name for all tags.
The xml file could be find in your AppData\Roaming\I-Simpa folder and for example if you wish to change main pref to General, see in projet.cpp

Hi, can you help me?
I'd obtain a table to export in which the coordinates of points related to results (such as the intensity) can be written. How would I do?
Thank you.

Function GetSumLimit() in projet_calculation.cpp calculates from time=0, whereas all parameters should be calculated starting from time when direct wave approaches the receiver.

I've made a temporary solution at:
wbinek@827530d

Hide this error message:

locale zh not found

Add a method in order to change the working folder of I-SIMPA. Currently it is %APPDATA%/i-simpa/

There is a possible issue with element identifier in project tree. We should add thread safe way to ensure uniqueness of such indices.

The enable/disable parameter is not present for Scene receiver while it is present for Plan receiver

Add a (disabled by default) verbose mode to SPPS computation core.

If verbose mode is disabled only vital information are printed. (Main progression event, warnings and errors)

Allow to display specific help on wxwidgets controls

Hello,
I have tried to run the executable file in compatibility mode for windows 7 and regularly in Win10 but it still throws up an error before the language selection menu and crashes after the language is selected. Here are some screenshots of the errors.

Any help would be much appreciated.

Thanks
-Seth

Find a way to render the (+) expand node button on tree root items. (look at spps and classic theory nodes)

'Left' align instead of a 'Center' alignment could be a better display

I am not an expert on programming. I would like to know if merging the recent changes (the Travis related things) will change the way my fork of I-SIMPA builds/works. As far as I understand it provides a simpler way of building and testing the application. Does it affect the builds done in Visual Studio? Could you please give me some explanation.

Thanks!

There is a lot of issues with files formats across different architectures and different compilers as it will apply padding and endianness differently.

The easier solution is to switch to the versatile Ply format already implemented in lib_interface.

Hi,
Why the results of a receiver are different from those of a surface at the same point and in the same conditions? In particular on the same point I read 138 dB (SPL) by punctual receiver and 130 dB by surface receiver.
Thank you very much!

• The Directivity balloon' parameter of a sound source should not be enable (or visible) if 'Balloon' is not selected in the 'Directivity' parameter.
• In addition, one can also remark that 'Directivity balloon' is displayed twice in the 'Directivity' parameter.

Check if a sound source is not in intersection with a wall.

If a sound source is in intersection, print an error with the sound source coordinate and name then cancel the spps computation.

Provide tetgen alternative for meshing as http://gmsh.info .

Travis has the ability to publish result of compilation (binary):
https://docs.travis-ci.com/user/deployment/releases

Travis should upload packages to github tags when we will be able to build I-SIMPA under Linux, Windows(MinGW) and MacOS.

Write cmake configuration file in order to compile projects in the following order:

1. lib_interface
2. libsimpa (python binding)
3. theorie_classique (should be renamed in Classic Theories)
4. Spps
5. I-Simpa

Add travis automated building configuration file.

There is path problems with I-Simpa under linux. However this is minor issues. All dependency of projects are multi-platform.

Ultimate goal is to publish I-Simpa to major linux distribution repositories.

I've been trying to obtain the impulse response of a simple 5x5x5 room using the SPPS calculation method. The absorption coefficient I'm using is 0.25 and I'm using Lambert's Law of diffusion. Also, I'm not accounting the absorption of air. Comparing my RIR to other programs, it is off.

One possibility I've been looking into is that the SPL values decay from about 80db to 30db and suddenly cuts off. My advisor says this is not natural. I tried increasing the number of sound particles per source but nothing changes much.

Anyone know a solution to where I can get a more complete, "natural" decay? Or a better way get the RIR?

In TCR results, global value of TR are not calculated (tables present value for each octave band). It could be useful to give a global value (if possible, by an averaging to be found) or to not show "0.00" (this could be replaced by "NC" for "No Calculation").